package sz2;

public class TextPaper implements Paper{
    private int charPerLine=16; //每行字符数
    private int linePerPage=5; //每页行数
    private String content=""; //纸张中内容
    private int posX=0; //当前横向位置，从0到charPerLine-1
    private int posY=0; //当前行数,从0到charPerLine
    private int posP=1; //当前页数

    @Override
    public String getContent() {
        String ret=this.content;
        if (!(posX==0 && posY==0)){
            int count = linePerPage-posY;
            for (int i = 0; i < count; ++i) {
                ret+=Paper.newline;
            }
            ret +="==第"+posP+"页 ==";
        }
        return ret;
    }
    @Override
    public void puInChar(char c) {
        content +=c;
        ++posX;
        //判断是否换行
        if (posX == charPerLine){
            content +=Paper.newline;
            posX = 0;
            ++posY;
        }
        //判断是否翻页
        if (posY==linePerPage){
            content+="==第"+posP+"页==";
            content += Paper.newline+Paper.newline;
            posY=0;
            ++posP;
        }
    }
    public void setCharPerLine(int charPerLine) {
        this.charPerLine = charPerLine;
    }

    public void setLinePerPage(int linePerPage) {
        this.linePerPage = linePerPage;
    }
}
